eta-eta ' mixing in the flavor basis and large N
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eta-eta ' mixing in the flavor basis and large N

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eta-eta ' mixing in the flavor basis and large N

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Mathieu, Vincent; Vento Torres, Vicente
Aquest document és un/a article, creat/da en: 2010
The mass matrix for η−η′ is derived in the flavor basis at O(p4) of the chiral Lagrangian using the large N approximation. Under certain assumptions, the mixing angle ϕ=41.4∘ and the decay constants ratio fK/fπ=1.15 are calculated in agreement with the data. It appears that the FKS scheme arises as a special limit of the chiral Lagrangian. Their mass matrix is obtained without the hypothesis on the mixing pattern of the decay constants.

    Mathieu, Vincent Vento Torres, Vicente 2010 eta-eta ' mixing in the flavor basis and large N Physics Letters B 688 4-5 314 318
http://dx.doi.org/10.1016/j.physletb.2010.04.021
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